/// <summary>
/// Create a single MCP23S17 GPIO pin.
/// </summary>
/// <param name="dev">MCP23S17 device object.</param>
/// <param name="channel">MCP23S17 I/O channel number.</param>
/// <param name="dir">GPIO pin data direction.</param>
/// <param name="state">Initial GPIO output state.</param>
public Pin(IO.Devices.MCP23S17.Device dev, int channel,
IO.Interfaces.GPIO.Direction dir, bool state = false)
{
// Validate parameters
if ((channel < IO.Devices.MCP23S17.Device.MinChannel) ||
(channel > IO.Devices.MCP23S17.Device.MaxChannel))
{
throw new System.Exception("Invalid channel number.");
}
mask = (uint)(1 << channel);
if (dir == IO.Interfaces.GPIO.Direction.Output)
{
dev.Direction |= mask;
}
else
{
dev.Direction &= ~mask;
}
this.dev = dev;
this.state = state;
}
/// <summary>
/// Constructor for a single Expand 2 click.
/// </summary>
/// <param name="socknum">mikroBUS socket number.</param>
public Board(int socknum)
{
// Create a mikroBUS socket object
IO.Objects.libsimpleio.mikroBUS.Socket S =
new IO.Objects.libsimpleio.mikroBUS.Socket(socknum);
// Configure hardware reset GPIO pin
myrst = new IO.Objects.libsimpleio.GPIO.Pin(S.RST,
IO.Interfaces.GPIO.Direction.Output, true);
// Issue hardware reset
Reset();
// Create MCP23S17 device object
mydev = new IO.Devices.MCP23S17.Device(
new IO.Objects.libsimpleio.SPI.Device(S.SPIDev,
IO.Devices.MCP23S17.Device.SPI_Mode,
IO.Devices.MCP23S17.Device.SPI_WordSize,
IO.Devices.MCP23S17.Device.SPI_Frequency));
}
